I have a 30 yr. Old raised keloid scar as a result from chicken pox as a kid. I used ScarGuard to flatten it. What do I use to lighten it? Benzoyl P?

MD Skin programs. Dr. Obagi is justly famous for being the first doctor to develop a prescribed skin care program that evens pigmentation problems, improves scarring, & even reverses fine lines. It actually delays skin aging. It's still a great skin care program & the cost ends up being about the same as all the over-the-counter anti-aging skin products out there, but with much better results. Others help, too.